Polish soldier, Witold Pilecki was imprisoned in Auschwitz on 22 September 1940.
Pilecki undertook the mission to infiltrate the camp in order to create a conspiracy network there, organize communications, send reliable data about German crimes in the camp, and possibly prepare the camp's prisoners for a possible fight. 
In April 1943, Witold Pilecki escaped with two fellow inmates. He wrote reports in which he described the camp terror and the tragic fate of the prisoners, as well as the progressive development of the extermination of the Jewish people in Auschwitz.
Dr. Adam Cyra, the author of his biography, talks about the life, work, and tragic death of Witold Pilecki.